We've had that here too, for at least the past 2 years. Last semester I was home every Thursday, and they called about once each month. I once pretended to play along while starting a load of laundry. I was thinking the only way to impact them economically was to waste their time, but I got bored after about 5 minutes so I left the phone in front of my radio's speaker for about 10 minutes and then I just hung up. I can't remember the last time they called, but it doesn't register the same way because now I just hang up right away.
Last month, our local neighbourhood paper published an announcement from the police department that an elderly man nearly fell for this scheme. Apparently he went right along with it and even entered his credit card information on their website - but he accidentally entered the wrong PIN too many times in a row so his card was refused. The reported story said that they then asked the man to wire them money, and that's when he finally got suspicious, hung up, and called the police...
